If your compiler does not produce files with an .OBJ extension,
      you can change the object extension with the directive:

      OBJEXT=.??? (replace ??? with the appropriate extension)

      You can use a different object extension for each section, like:

      SRCEXT=.PRG
      OBJEXT=.OBJ

      SRCEXT3=.C
      OBJEXT3=.OBJ

      SRCEXT4=.FOO
      OBJEXT4=.BAR